+0  
 
0
403
1
avatar+154 

The equation of line L1 is y= 3x - 2

The equation of line L 2 is 3y - 9x + 5 = 0 

Show that the two lines are parallel 

Please explain each step as i always struggle with these kind of questions.

YEEEEEET  Feb 10, 2018
 #1
avatar+86939 
+1

In the form y   = mx + b   .......the slope is  "m"

 

So  in the line

y =  3x  -  2         the slope  =  3

 

Now........ line 2  is

 

3y - 9x + 5  = 0      ....we want to get y by itself

 

Add 9x to both sides, subtract 5 from both sides

 

3y   =  9x  - 5         divide both sides by 3

 

y  =  3x  -  5/3      and note that the slope is exactly the same as the first one

 

And two lines with the same slope are always parallel

 

 

cool cool cool

CPhill  Feb 10, 2018

8 Online Users

avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.